Internal-combustion engine.



1). 3. LANE. INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAY 7, 1913.

Patented May 19, 1914.

2 8HEETSSHEET l.

W) TNESSES A TTORNE YS.

D. E. LANE.

INTERNAL 'GOMBU STI ON ENGINE.

APPLICATION FILED MAY 7,1913

Patented May 19, 1914.

2 SHEETS-SHEET 2.

INVENTOR.

S w W UN TE STATES PATENT: curios.

DEIQBER'I' 'E. LANE, or omoaso, rumors.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented May 19,1914.

Application filed May 7, 1913. Serial No. 766,027.

To all whom it may cone-em Be it known thatI, DELBERT E. LANE, a

citizen of the United States of America, and.

a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Internal-Conn bustio-n Engines, of which the following is a specification.

The main objects of this invention are to provide an nnproved form'of internal combustion engines offthe two-cycle type; to

unit of an internal combustion engine of this kind. ig. 2 is a side elevation of the same. Fig. 3 is a diagrammatic sectional view showing the relativepositions of the pistons at the time that ignition takes place.

' Fig. i diagrammatically illustrates the relative angular positions of the crank pins corresponding tothe positions of the pistons xsho'wn in Fig. 3. 5 is a sectional elevation showing the relative positionsof the pistons during expansion in the engine cylinder and intake of fuel nto the pumping cylinder. Fig. 6 diagrammatically 1llustrates the angular positions of the crank pins corresponding to Fig. 5. Fig. 7 is a sectional elevation but "showing the relative positions of the pistons during the exhaust from the engine cylinder and compression of fuel in the pumping cylinder; Fig. 8

i illustrates the angular positions of the crank pins corresponding to Fig. 7. Fig. 9 is-asectional elevation .showing the relativerpositions of the pistonsduring the intake and compression of fuel in the engine cylinder.

Fig. 10 illustrates the angular positions "of the crank pins corresponding. to Fig. 9.

In the construction shown in the drawings, the casting 1 is constructed to form an engine cylinder 2 having achamber 3, and a pumping cylinder-4 having a chamber 5. Pistons 6 and 7'are operatively arranged in the respective cylinders 2 and 4 and connected by connecting rods 8 and 9 to the crank shaft 10 journaled in the bearings 11 of'the crank casing 12. The dividing wall 13, separating the two cylinders, isprovided with a plurality of communicating ports hereinafter respectively designated. as the lower port 14-, upper port 15, and interme diate port 16. Communicationbetween the cylinders is afforded by means of these ports which are controlled bythe pistons 6 and 7.

A fuel inlet port 17 is located near. the :lower left hand side of the engine cylinder 2 substantially-level with the lower communicating portl l. An exhaust port 18 is located at the upper right hand side of the pumping cylinder 4 substantially level with the upper communicating port 15. -A carbureter (not shown) may be connected to the inlet port 17, and an exhaust pipe (not shown) may be connected to the exhaust Port 18. a

The engine piston 6 is provided with per and lower recesses 19 and 20, which are? adapted to respe'ctively register with the" communicating ports 14 and 16 at different times during certain periods of the move ment of the piston 6. A'passage 21 extends. upwardly'thro-ugh the piston'fromthe recess 20 to the end of the piston and opens into the chamber 3. The pumping piston 7 is also provided with upper and lower recesses 22 and 23, which at different times during 3 certain periods of the movement of the piston are respectively adapted to register with they communicating ports 14 and 16, and the exhaust port 18, and communicating port 15. A passage 24: extends from the lower recess 22 upwardly through the piston 7- to the end thereof, and opens into the chamber 5. The recesses 19, 20, 22, and 23 extendentirely around the pistons, so that the gas pressure will not cause uneven bearing of the pistons against the cylinder walls. The crank shaft 10 is provided with crank pins 25 and 26, for the rods 8 and 9, which pins are spaced apartangularly, as indicated in Fig. 2, with the pump crank pin in advance.

The engine cylinder 2 is shown provided The operation of the device shown is as follows: The crank shaft 10 revolves inthe direction ofthe arrow 29 (Fig. 2) and in-.

take, compression, expansion, and exhaust will occur in succession during every complete revolution of the crank shaft 10. The relative positions of the pistons when ignition occurs is shown in Fig; 3. During the expansion of the ignited gases both pistons are moving downward, the pumping piston slightly in advance of the "engine piston. The recesses 19 and 22 simultaneously come into registration with the fuel inlet port l7 and communicating port 14, and in view of the fact thatthe pumping piston 7 is moving downward fuel is drawn into the chamber 5 through the inlet port 17 ,recess 19, port 14, recess 22, and passage 24. The relative positions of the pistons during the early part ofthe intake are shown in Fig. 5. The intake of fuelcontinues so long as the recesses 19 and 22 both'remain in registrationwith the port 14. The recess 22 remains in registration with the port14 during the remainder of the down-stroke of its respect ive piston and during an early part of the upstroke. However, communication between the inlet port and the chamber 5 is cut off when the recess 19 in the piston 6 moves below the ports 17 and 14. During this early part of the return stroke of the piston 7, the piston 6 is caused to keep the ports 14 and 17 closed until the piston 7 has traversed a suflicient portion of its return stroke to move the recess 22 out of registration with .the port 14. As the piston 6 approaches the lower limit of its movement its upper. end uncovers the port 15 and allows the escape of the burned gases through saidport into the recess 23. The uncovering of the port 15 occurs just after the piston'7 begins its return movement, and as the recess 23 moves into registration with the ports 15 and 18. The burned gases are, therefore, allowed to escape through the exhaust port 18. The relative positions of-the pistons during exhaust are shown in Fig. 7. At the time that the engine piston 6 completes its stroke, the pumping piston has already moved upwardly, closing the port 14 and causing com pression of the gasesin the chamber 5, and as the engine piston 6 begins to cover the port 15 on the return stroke the recesses 20 and 22 move into registration with the intermediate por". In so that there is admission of fuel from the pumping cylinder 4 into the engine cylinder 3 before the port 15 is completely closed, This is timed to cause proper scavenging of chamber 3,- Fig.

7 shows the piston positions when scavenging takes place. .As the pistons continue their upward movements the fuel is forced pression stroke. Ignition then occurs and the cycle of operations just described is repeated.

, Although but one specific embodiment of this invention has been herein shown and described, it will beund'erstood that numerous details of the construction shown may be altered or omitted without departing from the. spirit of this'inventioh as defined by the following claims.

I claim 1. The combination of an engine cylinder,

a- ,pumping cylinder, pistons in said cylinders, a fuel intake port in the wall of said engine cylinder, said pistons having passages therein adapted to connect said intake port with the pumping cylinder and adapted to be controlled by the relative move ments of said pistons.

2. In an engine, the combination of an engine cylinder and a pumping cylinder, pistons in said cylinders, an exhaust passage through the pumping cylinder piston,

and exhaust ports in the walls of both of engine cylinder, an exhaust port in said pumping cylinder at respectively different levels, three communicating portsbetween said cylinders, being respectively located at the levels of said intake and exhaust ports and at an intermediate level, each of said pistons having-two annular passages in its periphery, a passage connecting the upper annular passage in one of said pistons with the space above said piston, anda second passage connecting the lower annular passagein the other of said pistons with the 7 space above said other piston whereby both 'of said pistons will cooperate to control each of said inlet and exhaustports.

4. An internal combustion engine, comprising an engine cylinder and a pumping cylinder, pistons operating in said cylinders, said cylinders having a plurality of communicating-ports between them, a fuel inlet port located in saidengine cylinder and I adapted to be controlled by said engine piston, an exhaust port located in said pumping cylinder and adapted to be controlled by said pumping piston, the engine'cylindet piston having a recess adapted to register;

with said fuel inlet port, and one of said communicating-ports for admitting fuel into said pumping cylinder, and the pumping cylinder piston being adapted to control communication between said exhaust port and another of said communicating-ports for perm'ittingthe escape of burned gases from saidengin'e cylinder.

5..An.internal combustion engine, comprising an engine cyhnder and a pumping cyl1nder,p1st0ns 1n sald cyl1nders,sa1d cylinders being'provided with a plurality of communicating ports adapted to be controlled by said pistons for openingcommunication between saidcylinders a fuel inlet port located in said engine cylinder substantially in alinement with one of said communicating-ports, and an exhaust port located in said pumping cylinders substantially in alinement with another of said communicating-ports, said pistons being each provided with a recess, one adapted to register with said fuel. inlet and said first mentioned connnunieating-port for admitting fuel into said pumping cylinder, and the other adapted to register with said exhaust port and said other communicating port for permitting an. escape of burned gases from said engine cylinder.

6.'An,internal combustion engine, comprising an engine cylinder and a pumping cylinder, pistons'in said cylinders, said cyl- "inders being provided with a plurality of connnunicating-ports adapted to be con trolled by saidfpistons foropening communication between said cylinders, a fuel inlet port located in said engine cylinder substantially in alinement with the lowermost of said communicating-ports, and-an exhaust port located in said pumping cylinders substantially inalinement with the uppermost of said communicating-ports, said pistons being each provided with a recess, one adapted to register with said fuel- -1nlet and said lowermost communicatinging-ports, an exhaustport located in said pumping cylinder substantially in alinement with another of said coinmunicating-ports, said engine piston beingi'provided with a recess adapted to register with said fuel inlet and said first mentioned communicating-port, said pumping piston being provided with a recess adapted to register with said first mentioned communicating-port and having a passage extending from said recess to the inner end of said piston, said pm'nping piston being also provided with a recess adapted to register with said exhaust port and said other communicating-port,

' and a crankshaft and connections controlling the'relative movements of said pistons.

8. An internal combustion engine, comprising an engine cylinder and a pumping cylinder, pistons in said cylinders, said cylinders being provided with an upper, a lower, and an intermediate cominunicatingport, a

fuel inlet portlocated in said engine cylin-.

de'r substantially in alinement with said lower communicating-port, an exhaust 10- rated in said pumping cylindersubstantiall-y in alinement with said upper communicating-port, the engine piston being provided with an annular recess'adapted to register.

with said fuel inlet and said lower communicating-port, the pumping-piston being provided withapair of annular recesses respectively adapted to register with said lower and intermediate communicating-ports and with said exhaust and upper communicating ports, said engine piston being also provided with means affording communication between said intermediate communicating-port and the engine cylinder, and means connecting said pistons with a rotatable member where-, by the recesses in said pistons will be caused to respectively register in succession with saidrespective ports.

9. An internal combustion engine, comprising an engine cylinder and a pumping cylinder, pistons'in said cylinders, said cylinders being provided'with an upper, a lower. and an intermediate communicating-port a fuel inlet port located in said engine cylinder substantially in alinement with said cated in said pumping cylinder substantially in alinement with said upper com municating-port, said engine cylinder piston being provided with lower and upper recesses, said lower recess being adapted toregister with said fuel inlet and lower communicatingport, said upper .re-

cess being adapted to register with said intermediate communicating-port and having a passage extending therefrom to the inner end of said piston and opening into the engine cylinder, said pumping piston beingalso provided with upperv and lower recesses, said upper recess being. adapted to register with said exhaust andjuppercommunicating-ports, said lower recess being adapted to register in succession with said lower communicating-port and with said intermediate, communicating-port, and said piston having a passage extending from said lower recess to the upper end of said piston and opening into the pumping cyhnder, and means for causing a reciprocatory movement of said pistons whereby there will succes-- sively occur simultaneous registration of the lower recess in said pistons with said lower communicating-port, then simultaneous registration of the lower recess in said pump 'ing piston and the upper recess in said enlower communicating-port, an exhaust lo-- &

gine piston with the intermediate communieating-port; and then the registrationof the upper recess in said pumping'piston with said exhaust and the upper communicatingport atthe time the upper end of said e11- gine piston is below said upper communicating-port.

Signed at Chicago this 2nd day of May 1913. i

D. E. LANE.

Witnesses E. J. BROSSMAINN,

C. M.:H1BBAR1 

